Who owns Zscaler (ZS)
Which tracked institutional funds hold ZS, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ZS company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
191 tracked funds added or opened ZS while 213 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
ZS’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes ZS more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in ZS divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 702 tracked filers holding ZS, 398 increased or opened the position and 413 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in ZS between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 50
- Jericho Capital Asset Management L.P.$192M
- Caisse de depot et placement du Quebec$31M
- BALYASNY ASSET MANAGEMENT L.P.$26M
- Stephens Investment Management Group LLC$21M
- Meridiem Capital Partners LP$20M
- Capula Management Ltd$17M
Full exits 94
- T. Rowe Price Investment Management, Inc.$237M
- TIGER GLOBAL MANAGEMENT LLC$222M
- Amundi$141M
- Penserra Capital Management LLC$78M
- JANUS HENDERSON GROUP PLC$76M
- WESTFIELD CAPITAL MANAGEMENT CO LP$60M
Largest adds
- BlackRock, Inc.$623M
- MILLENNIUM MANAGEMENT LLC$112M
- Connor, Clark & Lunn Investment Management Ltd.$82M
- CITADEL ADVISORS LLC$71M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$65M
- JACOBS LEVY EQUITY MANAGEMENT, INC$52M
Largest trims
- Invesco Ltd.$454M
- FMR LLC$256M
- AMERICAN CENTURY COMPANIES INC$212M
- TWO SIGMA INVESTMENTS, LP$165M
- PRICE T ROWE ASSOCIATES INC /MD/$155M
- UBS Group AG$79M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 9,890,384 | $1.4B | 14.0% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 6,196,726 | $875M | 8.8% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 4,721,393 | $666M | 6.7% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 3,529,213 | $498M | 5.0% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 3,161,548 | $446M | 4.5% | 2026-Q2 |
| STATE STREET CORP added | 2,493,672 | $352M | 3.5% | 2026-Q2 |
| Pictet Asset Management Holding SA added | 2,104,621 | $297M | 3.0% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 2,090,724 | $294M | 2.9% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 1,731,190 | $244M | 2.4% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 1,675,008 | $236M | 2.4% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 1,363,319 | $192M | 1.9% | 2026-Q2 |
| Jericho Capital Asset Management L.P. new | 1,362,862 | $192M | 1.9% | 2026-Q2 |
| MORGAN STANLEY trimmed | 1,136,698 | $160M | 1.6% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 1,129,691 | $159M | 1.6% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP added | 1,103,212 | $156M | 1.6% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 1,008,595 | $142M | 1.4% | 2026-Q2 |
| BARCLAYS PLC added | 951,598 | $134M | 1.3% | 2026-Q2 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC added | 882,348 | $125M | 1.2% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC trimmed | 866,494 | $122M | 1.2% | 2026-Q2 |
| UBS Group AG trimmed | 844,464 | $119M | 1.2% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 788,393 | $111M | 1.1% | 2026-Q2 |
| Squarepoint Ops LLC added | 770,236 | $109M | 1.1% | 2026-Q2 |
| CITIGROUP INC added | 759,988 | $107M | 1.1% | 2026-Q2 |
| Connor, Clark & Lunn Investment Management Ltd. added | 724,557 | $102M | 1.0% | 2026-Q2 |
| NORTHERN TRUST CORP added | 708,467 | $100M | 1.0% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 666,566 | $94M | 0.9% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC added | 660,245 | $93M | 0.9% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 643,928 | $91M | 0.9% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 636,789 | $90M | 0.9% | 2026-Q2 |
| Legal & General Group Plc added | 635,774 | $90M | 0.9% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 582,760 | $82M | 0.8% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 552,057 | $78M | 0.8% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 470,467 | $66M | 0.7% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 444,111 | $63M | 0.6% | 2026-Q2 |
| NORGES BANK added | 411,216 | $58M | 0.6% | 2026-Q2 |
| Liontrust Investment Partners LLP added | 398,491 | $56M | 0.6% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 396,914 | $55M | 0.5% | 2026-Q2 |
| DEUTSCHE BANK AG\ trimmed | 382,183 | $54M | 0.5% | 2026-Q2 |
| VOYA INVESTMENT MANAGEMENT LLC added | 368,160 | $52M | 0.5% | 2026-Q2 |
| FMR LLC trimmed | 350,831 | $50M | 0.5% | 2026-Q2 |
| LBP AM SA added | 348,151 | $49M | 0.5% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 340,507 | $48M | 0.5% | 2026-Q2 |
| Creative Planning added | 324,922 | $46M | 0.5% | 2026-Q2 |
| Jump Financial, LLC added | 324,276 | $46M | 0.5% | 2026-Q2 |
| Swiss National Bank trimmed | 294,800 | $42M | 0.4% | 2026-Q2 |
| PANAGORA ASSET MANAGEMENT INC added | 280,952 | $40M | 0.4% | 2026-Q2 |
| Nuveen, LLC trimmed | 276,691 | $39M | 0.4% | 2026-Q2 |
| Candriam S.C.A. added | 258,585 | $36M | 0.4% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 257,003 | $36M | 0.4% | 2026-Q2 |
| BANK OF NOVA SCOTIA added | 253,500 | $36M | 0.4% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ trimmed | 241,607 | $34M | 0.3% | 2026-Q2 |
| Optimus Prime Fund Management Co., Ltd. added | 240,100 | $34M | 0.3% | 2026-Q2 |
| SEB Asset Management AB trimmed | 228,737 | $32M | 0.3% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 226,736 | $32M | 0.3% | 2026-Q2 |
| FRONTIER CAPITAL MANAGEMENT CO LLC added | 222,274 | $31M | 0.3% | 2026-Q2 |
| Caisse de depot et placement du Quebec added | 220,620 | $31M | 0.3% | 2026-Q2 |
| Sumitomo Mitsui Trust Group, Inc. trimmed | 210,885 | $30M | 0.3% | 2026-Q2 |
| NICHOLAS COMPANY, INC. trimmed | 209,676 | $30M | 0.3% | 2026-Q2 |
| Man Group plc added | 208,854 | $29M | 0.3% | 2026-Q2 |
| Vident Advisory, LLC trimmed | 204,384 | $29M | 0.3% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 202,898 | $29M | 0.3% | 2026-Q2 |
| NEUBERGER BERMAN GROUP LLC trimmed | 196,403 | $28M | 0.3% | 2026-Q2 |
| Assenagon Asset Management S.A. added | 193,297 | $27M | 0.3% | 2026-Q2 |
| JIA INVESTMENT ALLIANCE PTE. LTD. | 191,060 | $27M | 0.3% | 2026-Q2 |
| Robeco Institutional Asset Management B.V. added | 189,990 | $27M | 0.3% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. added | 183,965 | $26M | 0.3% | 2026-Q2 |
| Eurizon Capital SGR S.p.A. trimmed | 183,735 | $26M | 0.3% | 2026-Q2 |
| CANADA PENSION PLAN INVESTMENT BOARD trimmed | 183,225 | $26M | 0.3% | 2026-Q2 |
| J. Safra Sarasin Holding AG added | 177,477 | $25M | 0.3% | 2026-Q2 |
| ShawSpring Partners LLC trimmed | 167,305 | $24M | 0.2% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 165,511 | $23M | 0.2% | 2026-Q2 |
| Erste Asset Management GmbH added | 164,734 | $23M | 0.2% | 2026-Q2 |
| STIFEL FINANCIAL CORP trimmed | 163,773 | $23M | 0.2% | 2026-Q2 |
| Optiver Holding B.V. added | 162,281 | $23M | 0.2% | 2026-Q2 |
| Zurcher Kantonalbank (Zurich Cantonalbank) added | 161,883 | $23M | 0.2% | 2026-Q2 |
| Champlain Investment Partners, LLC trimmed | 155,869 | $22M | 0.2% | 2026-Q2 |
| Vontobel Holding Ltd. added | 154,970 | $22M | 0.2% | 2026-Q2 |
| Ensign Peak Advisors, Inc trimmed | 151,674 | $21M | 0.2% | 2026-Q2 |
| LPL Financial LLC added | 151,272 | $21M | 0.2% | 2026-Q2 |
| CIBC Bancorp USA Inc. added | 147,983 | $21M | 0.2% | 2026-Q2 |
| Stephens Investment Management Group LLC new | 147,062 | $21M | 0.2% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 146,233 | $21M | 0.2% | 2026-Q2 |
| Wedbush Fund Advisers, LLC added | 146,077 | $21M | 0.2% | 2026-Q2 |
| Meridiem Capital Partners LP added | 144,497 | $20M | 0.2% | 2026-Q2 |
| Intesa Sanpaolo S.p.A. added | 142,515 | $20M | 0.2% | 2026-Q2 |
| BAMCO INC /NY/ trimmed | 140,953 | $20M | 0.2% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. trimmed | 140,346 | $20M | 0.2% | 2026-Q2 |
| Invesco Ltd. trimmed | 139,416 | $20M | 0.2% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 137,363 | $19M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System trimmed | 132,486 | $19M | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 128,495 | $18M | 0.2% | 2026-Q2 |
| Cresset Asset Management, LLC added | 127,409 | $18M | 0.2% | 2026-Q2 |
| Mitsubishi UFJ Asset Management Co., Ltd. trimmed | 127,034 | $18M | 0.2% | 2026-Q2 |
| ING GROEP NV added | 123,600 | $17M | 0.2% | 2026-Q2 |
| SCHRODER INVESTMENT MANAGEMENT GROUP trimmed | 123,423 | $17M | 0.2% | 2026-Q2 |
| Capula Management Ltd added | 122,000 | $17M | 0.2% | 2026-Q2 |
| Quadrature Capital Ltd added | 116,456 | $16M | 0.2% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC added | 114,715 | $16M | 0.2% | 2026-Q2 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | 114,383 | $16M | 0.2% | 2026-Q2 |
| Asset Management One Co., Ltd. added | 108,753 | $15M | 0.2% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.